Our experiments not only proved the existence of a nervous apparatus in the above-mentioned glands, but also disclosed some facts clearly showing the participation of these nerves in normal activity.

Ivan Pavlov

Even in the Western world, one cannot argue that the ideal has been achieved given the existence of issues like the integration, participation and representation of Muslim citizens, and occasional but lingering anti-Semitism.

Recep Tayyip Erdogan

Delude not yourself with the notion that you may be untrue and uncertain in trifles and in important things the contrary. Trifles make up existence, and give the measure by which to try us; and the fearful power of habit, after a time, suffers not the best will to ripen into action.

Carl Maria, Baron Von Weber

For me, the first fact of human existence is the human body. But if you embrace the reality of the human body, you embrace mortality, and that is a very difficult thing for anything to do because the self-conscious mind cannot imagine non-existence. It's impossible to do.

David Cronenberg

We have written the evidence of our existence onto the surface of our planet. Our civilisation has become a beacon, that identifies our planet as home to life.

Brian Cox

For all his learning or sophistication, man still instinctively reaches towards that force beyond. Only arrogance can deny its existence, and the denial falters in the face of evidence on every hand. In every tuft of grass, in every bird, in every opening bud, there it is.

There is some concern that the existence of multiple secret-but-unclassified designations - each governed by its own unique set of procedures - adds a layer of complexity to efforts to share information.

Carl Kropf

The potential output of the 9,000 million acres of world forest...indicate(s) that the forests can be made to produce about 50 times their present volume of end products and still remain a permanently self-renewing source for our raw-material supplies. Only forests -- no other raw-material resource -- can yield such returns. The forest can, and so must, end the chronic scarcities of material goods that have harassed man's existence since the beginning of history.